SECURE BX2000 Electronic Boost Control Instruction Manual

BX2000
Installation Instructions

Bx2000 has been designed to provide greater flexibility to the consumer using Off-Peak electricity for Water heating. It provides the facility to Boost your Hot water at any time and to ensure you are automatically connected to the Off-Peak supply whenever it is available.

INSTALLATION AND CONNECTION SHOULD ONLY BE CARRIED OUT BY A SUITABLY QUALIFIED PERSON AND IN ACCORDANCE WITH THE CURRENT EDITION OF THE IET WIRING REGULATIONS.

WARNING : ISOLATE MAINS SUPPLY. BEFORE COMMENCING INSTALLATION ENSURE THE UNIT IS PROPERLY EARTHED.

The BX2000 should be mounted on a standard conduit box or directly onto the wall. It should NOT be mounted on an unearthed metal surface. The BX2000 should be connected to the incoming supplies using 3 core cable with a minimum conductor size of 1.5mm2. Heat resisting flexible cords should be used to make connection to the immersion heater(s).

Means of disconnection from the 24 Hour and Off Peak supplies having at least 3mm contact separation in both poles must be incorporated in the fixed wiring (This is usually provided in the consumer unit). Both the Off Peak and 24 Hour supplies must be on the same phase. Both the Off Peak and 24 Hour supplies should be protected by a 15 amp HRC fuse or, preferably a 16 amp MCB. In some cases immersion heater failure can damage the BX2000. Installation of a 100 mA RCD will provide additional protection for the unit. If the BX2000 is to be connected to a ring main then the spur feeding the controller should be protected in the same way.

Mounting
The BX2000 should be removed from the mounting box by unscrewing the 2 captive screws securing the unit.

Conduit Box Mounting
Use either the 2 holes marked ‘A’ (see diagram) to secure to a single gang box, or the two holes marked ‘C’ for a double gang box. Cable entry is through the cut-out between the 2 fixing holes ‘A’.

Surface Mounting
Use the two holes marked ‘B’ (see diagram). Cable entry is through the most appropriate cut-out.

REMOVE THE APPROPRIATE CABLE ENTRY CUT-OUTS BEFORE FIXING THE BOX, WHERE POSSIBLE DRILL THE BOX TO PROVIDE A CLOSE FITTING ENTRY FOR CABLES AND HEAT-RESISTANT FLEXIBLE CORDS. TAKE CARE TO REMOVE SHARP EDGES.

Connections – Single Immersion Heater

Use a three-core cable with a minimum conductor size 1.5mm2 to connect the unit to the supply. Connect the incoming wires to the terminal block as follows;

TERMINAL 1 – Link to Terminal 7
TERMINAL 2 – Link to Terminal 8
TERMINAL 3 – LIVE 24 Hour On Peak (Boost) supply in
TERMINAL 4 – NEUTRAL 24 Hour On Peak (Boost) supply in
TERMINAL 5 – LIVE out to immersion heater
TERMINAL 6 – NEUTRAL to immersion heater
TERMINAL 7 – Linked to Terminal 1
TERMINAL 8 – Linked to Terminal 2
TERMINAL 9 – LIVE Off Peak supply in
TERMINAL 10 – Neutral Off Peak supply in

Clamp all surface wiring adjacent to the box or use trunking where appropriate. Secure the heat resistant flexible cords from the immersion heaters using the cable clamp in the box.

Connections – Dual Or Twin Immersion Heaters

Use a three-core cable with a minimum conductor size of 1.5mm2 to connect the unit to the supply. Connect the incoming wires to the terminal block as follows;

TERMINAL 1 – Do not use
TERMINAL 2 – Do not use
TERMINAL 3 – LIVE 24 Hour On Peak (Boost) supply in
TERMINAL 4 – NEUTRAL 24 Hour On Peak (Boost) supply in
TERMINAL 5 – LIVE out to top or Boost immersion heater
TERMINAL 6 – NEUTRAL to top or Boost immersion heater
TERMINAL 7 – LIVE out to bottom or Off Peak immersion heater
TERMINAL 8 – NEUTRAL to bottom or Off Peak immersion heater
TERMINAL 9 – LIVE Off Peak supply in
TERMINAL 10 – NEUTRAL Off Peak supply in

Clamp all surface wiring adjacent to the box or use trunking where appropriate. Secure the heat resistant flexible cords from the immersion heaters using the cable clamp in the box.

Bx2000 Internal Connections

Wiring diagram for Hot water cylinders with single immersion heater.

Wiring diagram for Hot water cylinders with dual or twin immersion heater.

When wiring is complete ensure that all terminal screws, including the earth terminal screws are securely tightened to achieve a minimum torque of .75Nm.

Completing The Installation

To assemble the controller to its mounting box first push the connectors numbered 1 – 10 into the corresponding numbered terminal as shown (see diagram on page 2) Carefully offer the controller to the box and secure with the fixing screws, ensuring the wiring does not become damaged.

Switch on the mains supply, put the rocker switches in the ON position.

Specification

Secure Meters (UK) Ltd
Secure House, Lulworth Close,
Chandlers Ford,
Eastleigh, SO53 3TL, UK
t: +44 1962 840048 f: +44 1962 841046
www.securemeters.com

Part Number P80093 Issue 13